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Advent calendar 2015
8 December
All 2015 advent puzzles
~
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What is the largest number of factors which a number less than a million has?
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720720 has 240 factors.
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averages
elections
unit fractions
3d shapes
probability
doubling
lines
crosswords
geometric mean
powers
books
range
matrices
chess
angles
axes
palindromes
decahedra
christmas
digital clocks
dice
games
probabilty
triangle numbers
multiplication
surds
consecutive integers
perfect numbers
wordplay
scales
arrows
albgebra
integers
floors
folding tube maps
complex numbers
multiples
polynomials
medians
rugby
square roots
money
geometry
mean
digits
regular shapes
grids
cryptic clues
spheres
square numbers
symmetry
proportion
means
algebra
products
clocks
tournaments
speed
expansions
circles
parabolas
planes
pascal's triangle
quadrilaterals
factors
cards
consecutive numbers
colouring
numbers
even numbers
volume
trigonometry
tiling
gerrymandering
calculus
taxicab geometry
neighbours
partitions
percentages
logic
dodecagons
area
shapes
differentiation
dominos
determinants
rectangles
ave
digital products
xor
chalkdust crossnumber
integration
star numbers
remainders
sport
geometric means
sums
cubics
functions
tangents
lists
ellipses
cryptic crossnumbers
indices
quadratics
sets
people maths
addition
sum to infinity
multiplaction squares
binary
fractions
squares
factorials
routes
polygons
square grids
bases
coordinates
menace
the only crossnumber
cube numbers
hexagons
prime factors
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